Doubletree-coupling.



E. H. 'DEC KER. DOUBLETREE (LOUPLING.- APPLICATION FILED JL!LY I3. l9l 6- 1,228-,886. Patented June 5, 1917..

INVENTIOR WITNESSES I Ey l V i 4 I Q ATTORNEY "rA s PA DOUBLETREE-COUPLING.

Specification of Letters Patent.

Patented June 5, 1917.

Application filed July 13, 1916. Serial No. 109,125.

To all whom it may concern: 7

Be it known that I, EUGENE H. DECKER, a citizen of the United States, residing at Slater, in the oountyof .Moifat and State of Colorado, have invented certain new and useful Improvements in Doubletree-Couplings, of which the following is a specification.

This inventionrelates to a doubletree coupling and more particularly to a device for connecting the whiflietree or doubletree to swingletree.

The primary object of the invention is to provide a coupling for a doubletree with means for preventing undue wear at the pivot point of the doubletree and constructed to obviate the binding that usually occurs in devices of this character.

A further object of the invention is to provide a structure that will permit the parts, when they become loose by wear, to be adjusted by bringing them closer together to obviate the rattling that occurs when the parts become worn.

A further object of this invention is the provision of a doubletree coupling which consists of comparatively few parts and is simple in construction, but durable and well adapted to withstand the rough usage to which devices of this character are ordinarily subjected.

For a full description of the invention and the advantages and merits thereof, reference is to be had to the following description and the accompanying drawings, wherein is illustrated the preferred form of my invention, in which;

Figure 1 is a perspective view showing the invention applied to a doubletree and swingletree.

Fig. 2 is an end elevation.

Fig. 3 is a vertical transverse section.

Fig. 4 is a perspective view of the clip.

The doubletree 1 of the usual construction is adapted to have the swingletree 2 pivoted on its top. As shown by Figs. 3 and 4 of the drawing, the clip 3 is of substantially U- shaped formation, comprising the spacing wall 4, the upper arm 5 and the lower arm 6. The space between the lower and upper arms 5 and 6 is just enough to receive the doubletree 1. An ear 7 is formed at the terminals of each of the arms 5 and 6 and the ears are provided with circular apertures 8. The upper arm 5 is provided with a circular boss 59 which is positioned directly above the center of the doubletree 1 and is provided with a central opening 10 extending through the boss and through the arm 5. The lower arm 6 is also provided with an aperture 11 in vertical alinement with the aperture 10. Each of the arms 5 and 6 are also provided with smaller apertures 12 through which fastening screws 13 are extended and adapted to be screwed into the doubletree 1 for securely holding the clip to the doubletree. The lower face of the swingletree 2 is provided with a wearing plate 14 of substantially square formation and each corner of the plate is provided with an opening for receiving a fastening screw 15 by which the plate may be securely fastened to the swingletree 2. V A central circular opening 16 is formed in the plate 14 and is of a di ameter suiiicient to receive the boss 9 on the upper arm of the clip, so that when the swingletree is mounted by placing the boss within the circular opening 16 the swingletree may be freely rotated. As the clip and wearing plate are of steel or other suitable hard metal, the parts may be nicely fitted together for preventing rattling or undue Wear when the device is in use.

Directly above the wearing plate 14 and secured to the top of the swingletree 2 is a bearing plate 17 fastened to the swingletree 2 by the screws 18 and this plate is also provided with a central aperture. The swingletree 2 has an opening 18 and the doubletree 1 has an opening in alinement with the opening 18' and with the opening in the clip. A pivot bolt 19 is extended through the bearing plate 17 and the opening 18 in the doubletree and continues downwardly through the openings in the clip 3 and doubletree 1. The upper end of the pivot bolt has a retaining head 20. A retaining arm 21 has its upper end curved to conform to the curvature of the top of the swingletree 2 and its extreme end is disposed at right angles to the pivot bolt 19 and is provided with an aperture 22 through which the pivot bolt is extended and the head of the pivot rests upon the top of the end of the retaining bolt 21. The shank of the retaining bolt 21 is extended through the apertures 8 in both of the ears? and its lower end is screw threaded to receive a fastening nut 23 which bears against the ear 7 on the lower arm 6 of the clip. The lower end of .loWer arms extending at right angles from the pivot bolt is also screw threaded and re ceives a fasteningnut 24 for holding the bolt in operative position. 7

I claim:

said doubletree and in engagement, respectively, With the upper and lower surface of 2 the doubletree, the terminals of the said arms being provided With ears having open- Ina coupling of the character described, ings formed therein, a retaining bolt exthe combination With a doubletree and a tended through the openings and secured to swingletree, the svvingletree having an operrthe upper end of the said pivot bolt, the said ing provided with a pivot bolt, the doubleretaining bolt being extended through the tree also having an opening for receiving openingsin the ears and in contact With the the end of the pivot bolt 'Whereby the side of the doubletree opposite to the said swingletree and doubletree may be 'pivotspacing Wall. ally connected together, a clip formed of a In testimony whereof I aiiix my signature 30 single p'ecfe of matglrial bent substantially in presence of tWo Witnesses. U-sha e or provi ing a spacin Wal in contad t With one side of the said (1%11bl6t166, EUGENE 'q c the said U-shaped clip including upper and v Witnesses:

FRED. SOUTHARD,

the said spacing Wall and embracing the ALBERT D. RoBIooUx,

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

